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Index: linux-2.6.23/arch/powerpc/kernel/idle.c
===================================================================
--- linux-2.6.23.orig/arch/powerpc/kernel/idle.c 2007-10-09 22:31:38.000000000 +0200
+++ linux-2.6.23/arch/powerpc/kernel/idle.c 2007-12-05 11:34:39.000000000 +0100
@@ -19,6 +19,7 @@
* 2 of the License, or (at your option) any later version.
*/
+#include <linux/leds.h>
#include <linux/sched.h>
#include <linux/kernel.h>
#include <linux/smp.h>
@@ -50,6 +51,12 @@
__setup("powersave=off", powersave_off);
/*
+ * CPU activity indicator.
+ */
+void (*leds_idle)(int is_idle);
+EXPORT_SYMBOL(leds_idle);
+
+/*
* The body of the idle task.
*/
void cpu_idle(void)
@@ -59,6 +66,8 @@
set_thread_flag(TIF_POLLING_NRFLAG);
while (1) {
+ if (leds_idle)
+ leds_idle(1);
while (!need_resched() && !cpu_should_die()) {
ppc64_runlatch_off();
@@ -92,8 +101,11 @@
ppc64_runlatch_on();
if (cpu_should_die())
cpu_die();
+ if (leds_idle)
+ leds_idle(0);
preempt_enable_no_resched();
schedule();
+
preempt_disable();
}
}
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